Quoth Guido van Rossum: [...]
I strongly recommend doing that. I hereby officially reject PEP 317.
I'll certainly add a section on the reasons, with discussion of the new-style exceptions question, and a summary of other feedback.
[elsewhere in the thread]
I've now read the PEP, and it simply fails to explain why implicit instantiation sucks so badly as to require all this pain. The arguments of readability and consistency are pretty mild suckage IMO.
My next question, then, is whether those arguments are strong enough to justify, for example, recommending against implicit instantiation in PEP 8, or changing the Tutorial's examples.